From a height of 4 m, a hollow sphere with a radius of 12 cm and a mass of 650 g rolls along an inclined trough (45 ° to the horizon). The system is located on Earth. [1] Find the potential [2] and [3] the kinetic energy at t0 just before the start of rolling and at the end of the slope of t1. [4] Find the momentum at the end of the road. [5] How would the momentum at the end of the slope change if the sphere slipped? Assume that the sphere is rolling in a V-shape slope/track (track sides are at right angle) . The image shows cross section of the sphere in the track.

Aball tossed vertically upward from the ground next to a building passes the bottom of a window 1.8 s after being tossed and passes the top of the window 0.20 s later. the window is 2.0 m high from top to bottom. what was the ball's initial velocity? the unit vector j^ is directed upward. how far is the bottom of the window from the launch position? how high does the ball rise above the launch position?

Bahan yang digunakan mencegah terjadinya polarisasi pada batu baterai a.larutan h2so4b.mncl2 dan serbuk karbonc.pbso4d.nh4cl

Abasketball star covers 2.65 m horizontally in a jump to dunk the ball. his motion through space can be modeled precisely as that of a particle at his center of mass. his center of mass is at elevation 1.02 m when he leaves the floor. it reaches a maximum height of 1.90 m above the floor and is at elevation 0.910 m when he touches down again. (a) determine his time of flight (his "hang time"). (b) determine his horizontal velocity at the instant of takeoff. (c) determine his vertical velocity at the instant of takeoff. (d) determine his takeoff angle. (e) for comparison, determine the hang time of a whitetail deer making a jump with center-of-mass elevations yi = 1.20 m, ymax = 2.45 m, and yf = 0.750 m.